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H. B. CARR.

ELECTED MAGNETIC WATCH CLOCK.

Patented Mar. 25,1890;

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R. B. CARR. ELECTED MAGNETIC WATCH CLOCK.

u Patented Mar. 25, 1890.

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RUFUS B. CARR, OF

BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF ALBERT HOlVARD, OF SAME PLACE.

ELECTRO-MAGNETIC WATCH-CLOCK.

SPECIFICATION forming part of Letters Patent No. 424,268, dated March25, 1890.

Application filed December 13, 1889. Serial No. 333,665. (No model.)

To all whom it may concern.-

Be it known that I, RUFUS BOARR, of Boston, in the county of Suffolk and State of Massachusetts,-have. invented certain new and useful Improvements in Electro Magnetic Watch-Clocks, of which the following is a specification.

My invention relates to magnetic watchclocks such as are adapted to be operated by watchmen in the course of their rounds and for the purpose of detecting delinquent watch men.

- My improvements consist, generally, in a circular dial which is adapted to rotate regularly upon a central arbor, and upon the surface of which dial is a circle concentric with the same and having transverse marks crossing the circumference of the circle at regular intervals apart; also, two armature levers, each of which is pivoted near an electro-magnet and has attached to it the armature of said magnet, the other arms of the two levers extending in a nearly tangential line on either sideof the circumference of the above-named circle, which arms are adapted to operate pins for puncturing the dial on either side of said circumference.

My improvements also consist in connecting the wires from the battery with different stations and certain new and useful switch mechanism at each station that will enable the wires of any station to be brought into electrical connection with either electro-magnet, so as to operate either armature-arm to puncture the dial upon the completion of the circuit.

In the accompanying drawings, Figure 1 is a plan of my improved electro-magnetic annunciator. Fig. 2 is a section taken through the line 1 2 of Fig. 1. Fig. 3 .is somewhat similar to Fig. 1, except that the upper part of the dial is broken away and the circuitwires of the two magnets are shown as connected in a diagrammatic form with an electric battery and the switches of three stations. Fig. 4 illustrates a plan of the switch mechanism. Fig. 5 is a side elevation of the same.

Similar letters and numerals represent like parts in all of the figures.

a is a record-sheet or dial attached to plate I), Fig'. 2, which is made to revolve in regular motion by means of clock-work, say, once in twelve hours.

On the record-sheet a, at the outer edge, are figures representing thehours, (indicated by 'n.)

Within the outer circle 41 and concentric with the same is another circle, having transverse lines across its circumference 0, making divisions representing the distance said circumference travels in an hour, and intermediate cross-lines making subdivisions representing five minutes.

The direction of the travel of the shown by the arrow in Fig. 1. I

Referring to Fig. 2, 7' is a sheathing of rubber or similar material on the anvil-bar 1i,

dial is which bar is rigidly mounted in such a manv ner that itstands immediately in front of the record-sheet or dial a. Beneath the record-sheet at and Z, Fig. 2, are two plates, through which two character-pin sf pass, 1 ittin g loosely in said plates. The pin f is provided with a collar g, which is a part of said pin, and which is kept pressed against the plate Z by means of a spiral spring 71, which encircles the pin f between said collar and the plate 7. The ends of the character-pins f which are immediately underneath the record-sheet or dial a, are made pointed and sharp.

c c are two electro-magnets, which are in a position near the revolving dial.

(1 and d are levers pivoted near the magnets 0 c, and on the outer end of which are mounted armatures c, Fig. 2, and in positions within the field of magnetism of said magnets. The inner ends 111 of the armature-levers (Z (1 rest against the ends of the character-pins, Fig. 2.

The switch mechanism with which each station is provided may be described as follows: q, Fig. 4, is a switch-bar pivoted to a stud I, on which said bar is adapted to revolve one half-turn. p p are two substantiallyparallel fiat springs, which extend equal distances from the stud t on either side of the same. lVhen the bar (1 is turned in one direction,it rests on the spring 17, and when in the opposite direction it rests on the spring 1). r is a spring secured at one end midway be- ICQ - said stations. tion wit-l1 its switch q turned to the left and tween the springs 19 p with its surface at right angles to the surfaces of said springs and extending midway between the same. The free end of the spring extends over the stud 1, so that by pressure said spring will come in contact with stud t, and on being rcleaf ed it will assume its normal position above said stud. A push-button s, Fig. 5, is mounted in the cover of the switch-case above the spring 0" in such a manner that by pressing upon said button the spring 0' will be brought into contact with the stud t.

The dotted lines in Figs. 4 and 5 show the relative size and position of the case in which the springs p p and rare inclosed. From the springs 19,19, and 0' wires o, w, and u, respectively, are,extended and connected with the lines and battery-wire, as shown in Fig. 3.

The method of operation of my improved apparatus is as follows: Referring to Fig. 3, 3 at 5 represent the switch mechanism of three different stations. 9 represents an electric battery, from one pole of which a wire 6 is extended to the magnets c c and c' c', and

' connected to one end of the coil-wire of each.

From the other pole of the batter T 9 the wire 11; is extended, and which is connected with the springs r of the signal mechanism at the diiterent stations. The free end 7 of the coilwire of electromaguet c c is extended to the stations 3 4 5 and connected to the wires '0 of said stations, and. the free. end Set the coilwire of electro-magnet c c is extended to stations 3 4 5 and connected to thewire w of hen the button 3 ata stain contact with the spring 1), as i114, Fig. 3, is pressed, the circuit is made complete through springs 19 r and wires 8 and electro-magnet c c, causing the armature-lever d, belonging to that magnet, to press forward the characterpin f, Fig. 2, and make a puncture in the record-sheet on the inner side of circle 0, Fig. 1. \Vhen the switch q is turned to the right, (see 3 and 5, Fig. 3,) and the button 5 at either of said stations is pressed, it completes the circuit through the springs 19 0", wires 7 and 6, and electro-magnet c c, causing its armaturelever (Z to press forward its character-pin f, making a puncture in the record-sheet or dial outside of the circle 0. By means of the arran gement of the switches in the various stations by the party having the system in charge, and in an order not known to the watchman, the buttons not being pressed by him in the order as intended, the pressure of the wrong button or the omission of pressing the right button is detected at once on examining the dial.

The purpose of the above-described apparatus is to verify the faithful or detect the.

unfaithful attendance of the watchman who may be appointed to watch certain designated premises.

To render the apparatus practicable for the purpose intended, the person having in charge the apparatus, including the several stations,

should be informed of the route that it is the watch mans duty to travel. The several switches at the diiierent stations are then turned by the person having the apparatus in charge, so that he will know when any of the push-buttons are pressed on what side of the circumference 0 each of the needles f will puncture; also, no part of the apparatus should be accessible to the watchman but the push-buttons 3, above described. The watchman being then given certain premises or localitiestowatch, in each of which are switchstation .9, he should press the button 8 in each station when he arrives there. If he neglects button of the wrong station,or should push the button 3 at any station more than once,

to have pushed the button there, his .delinquency would be immediately discovered upon examination of the dial, as the punctference 0 would not be in their proper places and as arranged for beforehand.

causes the characters-or punctures to be made may be a circular disk of paper made pin in a regular motion at a definite speed. The record disk or strip is marked off into divisions representing the distance said disk or strip will move in an hour or five minutes, as above described and shown, or less, if desired- The time that each station is visited is indicated by the position of the puncture made in the record-sheet in relation to the time divisions, which puncture is caused to be made by the watchman pressing'the electric button at a station. For example, there is an indicator and detector arranged with three stations numbered from three to five,inclusivc. (See Fig. 3.) Suppose the switch at station No. 3 be arranged to operate the pin on the right of the line 0 on the record-sheet, switch at station No. t to operate the pin on the left of ,the line 0, and switch at station No. 5 the pin on the right of the line 0. Then any puncture being omitted or being made out of its assigned place in regular order at once indicates that the watchman has not followed the route assigned him. This programme of arrangement of punctures can be varied at the will of the one having the keys of the stations in charge.

Vhat I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a record-sheet moved at a regular rate and provided with a line or mark, as o, of two movable pins arranged to puncture said sheet at opposite sides of said line, two electro-magnets having armatu res and levers thereto attached arranged to move said pins, two electric circuits including said magnets, a circuit-closing device, and a switch, whereby said circuit-closin g device may be included in either circuit when he should have been at another station- The record-sheet on which the watchman to revolve in a regular stated time or a strip of paper made to pass over the characterto do so from any cause, or should push the ures on one or the other side of the circum- IIO and disconnected from the other circuit, so that by the predetermined arrangement of said switch the operation of said circuitrclosing device is caused to operate either puncturing-pin, the record made on the sheet bein g therefore determined by the arrangement of the switch, as set forth.-

2. The combination of a record-sheet moved at a predetermined rate, two pins movable toward and from said sheet and arranged to make impressions thereon at different points, two electro-magnets, levers connected to the armatures of said magnets and arranged-to act on said markers, there being a lever and an actuating-magnet, for each marker, two electric circuits, one including one of said electro-magnets while the other includes the other magnet, a series of signal-stations, each having a circuit-closing device common to both -circuits, and a corresponding switch, whereby the circuit-closing device of either station may be included in either circuit, so

surface opposite to the pointsof said pins and having a line which, during the course of said surface, will be between therpins, an. independent electrical circuit-conductor connected with each electro-magnet, a pivotal switch connected with one'of said conductors, whereby that-part of the circuit carried by said conductor can be brought opposite 0 either of the other conductors and the two readily brought into contact to complete the circuit, whereby either magnet may be electrified and its armature-lever and pin operated, all as set forth.

4. The combination, with two armature-levers, electro-magnets for operating the same, and aloose pin supported opposite the free arm of each lever and adapted to be operated by the same, of a regularly-movable recordingsurface opposite to the points of said pins and having a line which, during the course of said surface, will be between the pins, a series of two or more switch-stations, each having a circuit-conductor connected with each ele'ctro-magnet, and twoother circuitconductors, one connected to one electro-magnet, and the other conductor connected to the other magnet, and a pivotal conductin g-switch connected with the conductor which is common to both magnets, whereby said switch can be brought opposite either of the other conductors, so as to electrify either magnet, and to operate its armature-lever and pin from any desired station, all as set forth;

5; The combination, with 'two electro-mag nets, their armatures, levers, and indicating devices,of the circuit-conductors u 6, o 7, and

w 8, springs p p and 'r, and'switch q, all as set'forth. In testimonywh'ereof I have signed my name to this specification, in the presence of two-subscribing witnesses, this 29th dayof November, A. D. 1889. l Y A RUFUS B. CARR.

Witnesses: -A. D. HARRISON,

ARTHUR W. CRossLEY. 

